Very nice upgrade, and as we have come expect from your talents, she's running beautifully! I was wondering if you heat-cured your ceramic, but I was guessing from how pretty it was that it was not. =) The really high heat-resistant rattle can ceramic coatings like to be cured in stages, starting out around 300* (F) for one hour, let cool, repeat, let cool, then 30 minutes at 550 or half your expected max temp. For jet exhaust duty if you ever decide to redo it, I'd recommend going straight for a Cerakote. They have an assortment of colors in their highest temp-resistant line (1800*F) that now includes an air cure product thankfully. They say to use specific HVLP guns and needles for application, but I've used a run-of-the-mill Paasche airbrush which works fine so long as you clean it out IMMEDIATELY between coats.
Hi! I am not sure how well it would work, but maybe you could try and see if a graphite spray could work? The idea being that graphite will thermally ablate and (hopefully) should not delaminate from the steel. You might need multiple coats, however. Do you think it is worth a try? Small flame, big flame. Nature friendly engine. Today's video was a blast! Thank you!
that graphite is carbon and won't last long even in an environment with less oxygen like the turbine exhaust. Ceramic coating is a pretty good idea when it comes to high temps, oxygen and metal. Maybe sandblasting would have prevented the coating from delamination.
@@jakobwagner7097 The expansion of the metal might have contributed to delamination. Until a better solution(like alumina coating) is implemented, graphite could be used to run short tests.
Sehr nice. Verfolge den Bau jetzt schon seit einigen Videos. Hast eigentlich was bestimmtes mit dem Aparillo vor oder ist das Ziel das Teil möglichst effizient zu bekommen?
Hi Tosh, von Effizienz kann man bei dem Gerät nicht sprechen. Ich möchte es endlich mal zuverlässig zum Laufen bekommen, ohne jedes Mal an der Dose rumschrauben zu müssen. Würde das Teil gerne mal auf einem Jet Treffen präsentieren, sonst gibts keinen Plan das irgendwo einzubauen. Mfg Andy
Wow, awesome!! Can you see any thrust improvements with the new compressor? I've read somewhere that less blade count means less energy required to drive the compressor.
Hi Shanaka, not shure yet about thrust. I think its a bit more. The new compressor wheel has more blades, than the older. The new has 8 full and 8 splitted, the older had 11 fully bladed. Andy
How do you balance the compressor when assembling it? There is no video about balancing in other videos, so I ask a question. And when I contacted GMN, there was no response. Excuse me, can you tell me which company's bearings and which part number are you using? I am enjoying watching the video.
Hi Young, these are the current bearings I use. www.kugellager-express.de/keramik-hybrid-spindellager-hcb7003-e-t-p4s-ul-17x35x10-mm You can read the PDF Datenblatt below the text. Balancing I do in my hand. I have a U shaped alloy profile. It takes the shaft with the bearings. Then I spin the shaft with compressed air and feel the vibration. I only balance the shaft and the turbine wheel, because the comp wheel comes already balanced out of the box. Then I try with knead to find the position, where the vibs getting better. If all feels good, I grind off material on the opposite side. It takes some time and good feeling, but it works for me. Andy
Yes, you have to order extra balls. Remove the retainer for the aft bearing and insert 16 balls. I like to have a small gap. 17 balls would also fit, but then its a bit tight. I will measure the size and send you a message. I think the balls are 1/4 size. Andy
Hast du die Keramik Schicht auf einen polierten oder angerautem Untergrund aufgetragen? Brauchst du einen Flammenhalter? Vielleicht könnte ein solcher den Flammenfluss ein wenig verbessern.
Hi, Ich hab das Spray auf das vorher entfettete Inconel aufgesprüht. Bei dem Material ist nicht viel mit aufrauhen😤 Bei 10:10 kann man den Flammenhalter erkennen. Die sternförmige Struktur ist der Flammenhalter. Ohne den würde die Flamme gar nicht im Nachbrenner bleiben. Mfg Andy
@@j.kuhlmann8765 Denke auch, thermal expansion coefficient der Keramik wird wahrscheinlich ähnlich anderer Keramiken bei so ~3-6 x10^-6 [K^-1] sein, Inconel liegt eher so bei 11-14. Vielleicht geht es besser mit Titan? Ist das Inconel nicht aber sowieso resistent genug um die Temperaturen abzukönnen?
Hi Alex, handmade jet engine, there are no drawings. All is created in my head. I dont have any drawing, only a simple sketch, made with a pencil. Andy
OK, I know that, from your previous communication, about your job. I was asking about impeller compresor manufacturers original drawing, due to minimal clearance between housing and impeller (0.1 mm) Better to ask how you made housing for compressor? Thank you very much in advance! Man, your job is great 33 kg trust is such amazing result
Hi Aleksandar, 0,1 mm is a bit too small. Better 0,3 - 0,4 mm because of thermal expansion. I use wheels fron Ebay. Kinugawa, Mamba. The intake is made of a big round of alloy. After center drilling, lathed the right diameter for the wheel and with a radius cutter, I lathed the radius from the wheel. It takes some time to fit the radius from the wheel into the alloy.After all is good, I sanded and polished all and made the outer shape. Andy
Puhh, i dont know. Here is a link. If it doesnt work, search for ceramic thermal spray. brycoat.com/surface-engineering/brycoat-thermal-spray-coating/ceramic-thermal-spray-coatings/ Andy
@@dnl_xr dann fehlt mir aber ne Menge Luft zum Antrieb der Turbine und die Abgastemperatur steigt enorm an. Die Luft kommt einfach aus der Turbinenstufe und wird dann in das äußere Rohr geleitet, welches das innere umgibt. Doppelwandrohr mit 1cm Luftspalt. Andy
Die Keramikbeschichtung geht möglicherweise garnicht wegen der Hitze ab, sondern durch die schnellen Temperaturschwankungen. Langsamer beschleunigen und mit wenig Leistung nachlaufen lassen könnte helfen.
Hi Patty, thats also a problem. I had 1,45 Bar at 65 000 rpm 70 000 is max rpm. Before the intake blew out, i wasnt able to have a look at the gauge. Now I collect new datas with the new wheel, but first I want to install my fixed nozzle without a/b. Andy
Hi Micha, keine Ahnung! Ich habe keine CNC Technik. Alles ist mit herkömmlichen Maschinen gefertigt. Lediglich die Drehbank verfügt über eine Digitalanzeige. Ich spanne alles ins 3 oder 4 Backenfutter und prüfe mit der Meßuhr den Rundlauf. Handwerklich habe ich auch bissl Geschick. Alles ohne Zeitdruck und vorheriges Überlegen hilft auch😉 Andy
@@Praendy Hilfe o.O ich frage weil 1. Die Form der Blätter mikroskopisch exakt sein muss und 2. Bei so hohen Drehzahlen dir bei jeder kleinsten Unebenheit das ganze Ding um die Ohren fliegt
Ja, das ist klar. Deswegen nutze ich industriell gefertigte Räder, die im Turbolader verbaut sind und schon feingewuchtet sind. Das Turbinenrad ist ebenfalls "lauffertig" und stammt von der Tornado Kampfjet APU. KHD T 312 heißt das Teil😉 Andy
Ich mag deine Experimente und den Bau deiner Triebwerke wirklich, aber der Spot war mal nix. Trockenes Gras, n Feld in der Nähe - nee du, das ist nicht gut...
Накат великолепный, турбина вращается с прекрасным звуком) Интересно, автор знает про канал Игоря Негоды) ua-cam.com/channels/b9_Bhv37NXN1m8Bmrm9x9w.html
What a beast, perfect way to kill all the weeds in the grass & garden. Afterburner is a great addition
You added splitter blades, good way to increase solidity without add too many wet surfaces where they are not needed 👍
Very good work. Engine sounds great and absolutely beastly when you lite the afterburner. I would say it is ready for a radio controlled fighter jet.
I learned from him from a forum, you have updated this jet engine project. Thanks for your dedication. From Vietnam
Very nice upgrade, and as we have come expect from your talents, she's running beautifully!
I was wondering if you heat-cured your ceramic, but I was guessing from how pretty it was that it was not. =)
The really high heat-resistant rattle can ceramic coatings like to be cured in stages, starting out around 300* (F) for one hour, let cool, repeat, let cool, then 30 minutes at 550 or half your expected max temp. For jet exhaust duty if you ever decide to redo it, I'd recommend going straight for a Cerakote. They have an assortment of colors in their highest temp-resistant line (1800*F) that now includes an air cure product thankfully. They say to use specific HVLP guns and needles for application, but I've used a run-of-the-mill Paasche airbrush which works fine so long as you clean it out IMMEDIATELY between coats.
Ttttttt
What a Great Video...!!!
Truly a Fabulous Jet Engine...!!!
Thank You for Sharing.
So very pleased to see an update!
Amazing work 👍🏼 keep it up
Ich find das Projekt einfach geil. 👍
So leidenschaftig..!top👍
wahnsinn wie dauervollgasfest der Brenner ist! Hut ab!
😁🤩👍👍👍
Wahnsinn!
Super Arbeit! Weiter so! 👍
Videos werden wirklich immer besser👌😊 Das Projekt ist klasse👍 weiter so
klasse teil und die videos werden auch immer besser :)
Look at the path of burnt grass!! Wow!!
Nice Brother Keep it up.
Hi!
I am not sure how well it would work, but maybe you could try and see if a graphite spray could work? The idea being that graphite will thermally ablate and (hopefully) should not delaminate from the steel. You might need multiple coats, however. Do you think it is worth a try?
Small flame, big flame. Nature friendly engine. Today's video was a blast!
Thank you!
that graphite is carbon and won't last long even in an environment with less oxygen like the turbine exhaust. Ceramic coating is a pretty good idea when it comes to high temps, oxygen and metal. Maybe sandblasting would have prevented the coating from delamination.
@@jakobwagner7097 The expansion of the metal might have contributed to delamination. Until a better solution(like alumina coating) is implemented, graphite could be used to run short tests.
Негода одобряет.
Amazing!
Good job
Getting serious!
awesome!
This has to be the most incredible DIY projects I've ever seen. Just to be sure I'm not imagining it, does this thing actually have an afterburner???
can you do a full and complete assembly video please? 🙏🙏 im really curious
that burner pipe really heats up.
Отличный результат, поздравляю. Кислорода теперь хватает.
Спасибо, да, кислород еще есть
Sehr nice. Verfolge den Bau jetzt schon seit einigen Videos. Hast eigentlich was bestimmtes mit dem Aparillo vor oder ist das Ziel das Teil möglichst effizient zu bekommen?
Hi Tosh,
von Effizienz kann man bei dem Gerät nicht sprechen.
Ich möchte es endlich mal zuverlässig zum Laufen bekommen, ohne jedes Mal an der Dose rumschrauben zu müssen.
Würde das Teil gerne mal auf einem Jet Treffen präsentieren, sonst gibts keinen Plan das irgendwo einzubauen.
Mfg Andy
Wow, awesome!! Can you see any thrust improvements with the new compressor? I've read somewhere that less blade count means less energy required to drive the compressor.
Hi Shanaka,
not shure yet about thrust.
I think its a bit more.
The new compressor wheel has more blades, than the older.
The new has 8 full and 8 splitted, the older had 11 fully bladed.
Andy
@@Praendy Hi Andy,
Oh, I see. Then it must be my false memory. Anyway, all the best and looking forward to seeing more improvements.
@Praendy Hi Andy! I love what you are doing. I was wondering how much thrust does it produce, and what is the fuel consumption?
Thank you,
Mark
مدهش
👍
👋🇰🇼
Ab man die noch leichter bekäme würde die gerne weiter tunen die ist schon Sau geil Work in Progress
Any special alloys? Or is this mostly common steel?
may i know what the machine u use to create all the metal parts?
Produces some decent power. Whack reverse thrust buckets on it for more effect.
Потрясающе!!! Продолжение будет?)
да спасибо
This is something else 🦾
perfect! how many thrust can produce?
He said ~30 kg in another video
👍👍👍👍
Can it be into a turbo prop?
If you use this with very slow speed, what will it sound like?
Hey, have you tried using one CD nozzle ? (Convergent divegent) Thanks! Amazing videos!
Hi Paulo,
I have a variable nozzle built, but the exhaust gases will not reach super sonic velocity.
A C/D nozzle is useless.
Thank you👍
Andy
Вот негодник какой )
How do you balance the compressor when assembling it? There is no video about balancing in other videos, so I ask a question.
And when I contacted GMN, there was no response. Excuse me, can you tell me which company's bearings and which part number are you using? I am enjoying watching the video.
Hi Young,
these are the current bearings I use.
www.kugellager-express.de/keramik-hybrid-spindellager-hcb7003-e-t-p4s-ul-17x35x10-mm
You can read the PDF Datenblatt below the text.
Balancing I do in my hand.
I have a U shaped alloy profile.
It takes the shaft with the bearings.
Then I spin the shaft with compressed air and feel the vibration.
I only balance the shaft and the turbine wheel, because the comp wheel comes already balanced out of the box.
Then I try with knead to find the position, where the vibs getting better.
If all feels good, I grind off material on the opposite side.
It takes some time and good feeling, but it works for me.
Andy
Thank you so much.
thank you. One question is, is the retainer at the back(turbin bearing) not damaged by heat?
Yes, you have to order extra balls.
Remove the retainer for the aft bearing and insert 16 balls.
I like to have a small gap.
17 balls would also fit, but then its a bit tight.
I will measure the size and send you a message.
I think the balls are 1/4 size.
Andy
Where do you buy the machinery to do this stuff? (the cancer machine)
can you share the math to calculate and design airfoil and compressor wheels ?
👏👏👏👏👏👏 where did you buy the new compressor?
Hi,
I bought it from Mambatek, Taiwan and found it on Ebay UK.
Andy
@@Praendy thanks my friend! 🇧🇷
Hast du die Keramik Schicht auf einen polierten oder angerautem Untergrund aufgetragen? Brauchst du einen Flammenhalter? Vielleicht könnte ein solcher den Flammenfluss ein wenig verbessern.
Hi,
Ich hab das Spray auf das vorher entfettete Inconel aufgesprüht.
Bei dem Material ist nicht viel mit aufrauhen😤
Bei 10:10 kann man den Flammenhalter erkennen.
Die sternförmige Struktur ist der Flammenhalter. Ohne den würde die Flamme gar nicht im Nachbrenner bleiben.
Mfg Andy
Könnte der Verschleiß der Keramikschicht nicht auch davon kommen, dass das Metall sich ausdehnt und dann Risse entstehen?
@@j.kuhlmann8765 Denke auch, thermal expansion coefficient der Keramik wird wahrscheinlich ähnlich anderer Keramiken bei so ~3-6 x10^-6 [K^-1] sein, Inconel liegt eher so bei 11-14. Vielleicht geht es besser mit Titan?
Ist das Inconel nicht aber sowieso resistent genug um die Temperaturen abzukönnen?
Какая тяга в кг у данной установки?
what is the material of the fan in front and rear?
Hi,
in the front is aluminium and at the end is a special heat resistant alloy.
MAR M 247, or Inconel.
Andy
Greetings, I have been watching your tests with curiosity. I want to work on afterburner and nozzles. Can you help me with this subject?
Hi Mustafa,
How can I help you?
Andy
@@Praendy Can you give me your contact information about talking afterburner
nice work!, but if you did that where I live in southern California where it's not so green you'd set the whole place on fire!
Just one question, blue prints, tech. drawing of impeller came with package, or not?
Hi Alex,
handmade jet engine, there are no drawings.
All is created in my head.
I dont have any drawing, only a simple sketch, made with a pencil.
Andy
OK, I know that, from your previous communication, about your job.
I was asking about impeller compresor manufacturers original drawing, due to minimal clearance between housing and impeller (0.1 mm) Better to ask how you made housing for compressor?
Thank you very much in advance!
Man, your job is great
33 kg trust is such amazing result
Hi Aleksandar,
0,1 mm is a bit too small. Better 0,3 - 0,4 mm because of thermal expansion.
I use wheels fron Ebay. Kinugawa, Mamba.
The intake is made of a big round of alloy. After center drilling, lathed the right diameter for the wheel and with a radius cutter, I lathed the radius from the wheel.
It takes some time to fit the radius from the wheel into the alloy.After all is good, I sanded and polished all and made the outer shape.
Andy
OK, I understand
Thank you very much
All the best for your forthcoming projects 👍
Hey Praendy, what is that white coating of the nozzle at 8:19 made of
Hi Yash,
its a Ceramic spray. There is a pic at 04:25, but it didnt work.
After a few starts it peels off.
Andy
@@Praendy Woah, you replied so quick, The ceramic spray is made which material, Thanks for being nice
Puhh, i dont know.
Here is a link.
If it doesnt work, search for ceramic thermal spray.
brycoat.com/surface-engineering/brycoat-thermal-spray-coating/ceramic-thermal-spray-coatings/
Andy
@@Praendy Thanks, sorry for disturbing
@@yashwardhan8542 no disturbing, just questions😉 No problem!
Thank you👍
Andy
what is your burn/ litre?? litres/ hour??
Hi Robert,
The engine burns 1,5 L/min, 90L per hour without afterburner.
Andy
8:25 ASMR
EVİL GENİUS
9.45 The many holes that have been made What is it for? 🤔🤔👍
And how did you create it?
Hi,
The holes should center the flame and prevent too much glowing for the exhaust nozzle.
They were drilled and bent with a mandrel.
Andy
Die Löcher im Strahlrohr sind für Kühlung oder ?
Hi Daniel,
Ja durch die Löcher kommt die ca. 600 Grad "kalte" Kühlluft.
Andy
@@Praendy woher zapfst du diese an? Vielleicht wäre ein bypass sinnvoll direkt vorne vom verdichter🤓
@@dnl_xr dann fehlt mir aber ne Menge Luft zum Antrieb der Turbine und die Abgastemperatur steigt enorm an.
Die Luft kommt einfach aus der Turbinenstufe und wird dann in das äußere Rohr geleitet, welches das innere umgibt. Doppelwandrohr mit 1cm Luftspalt.
Andy
@@Praendy hast du deine Turbine mal Thermodynamisch nachgerechnet? Würd mich mega interessieren das mal zu machen :)!
Die Keramikbeschichtung geht möglicherweise garnicht wegen der Hitze ab, sondern durch die schnellen Temperaturschwankungen. Langsamer beschleunigen und mit wenig Leistung nachlaufen lassen könnte helfen.
Hi Phil,
da hab ich auch schon dran gedacht.
Werde das nochmal wiederholen und das Ganze erstmal im Glühofen einbrennen.
Mfg Andy
*lach* Schön sah es ja aus, wie die KEramikbeschochtung sich verabscheute. Wie eine Schneekugel XD
what is the driveshaft casing made of?
Normal alloy
@@Praendy like aluminum?
Yes, aluminium.
@@Praendy did you make the outer case from a cooking pot?
Lol, yes its made from a stainless spaghetti pot😅
What’s the design thrust without afterburner?
Hi madpatty,
It should deliver ~590N, but I am far away.
John and me trying to solve the missing thrust problem.
Still working and testing😉
Andy
I would try to reduce nozzle diameter, it will deliver increased gas velocity
Hi Alexandar,
Not possible, the egt will rise more.I am now on my limit. 620 C
With afterburner on 740 C
Andy
Hi Andy.
What’s the compressor discharge pressure(P2) at maximum rpm you have measured?
Hi Patty,
thats also a problem.
I had 1,45 Bar at 65 000 rpm
70 000 is max rpm.
Before the intake blew out, i wasnt able to have a look at the gauge.
Now I collect new datas with the new wheel, but first I want to install my fixed nozzle without a/b.
Andy
MTU kann einpacken haha🎉🎉🎉❤
Houston, I think we have a fuel leak.
Nur ein bisschen schade das keine schockdiamanten zu sehen sind
dafür ist die Ausströmgeschwindigkeit zu gering.
@@petergebert4817 ja leider
now you need to uptade your profile picture for the channel
Wie machst du etwas so präzise?!?!?
Hi Micha,
keine Ahnung!
Ich habe keine CNC Technik. Alles ist mit herkömmlichen Maschinen gefertigt. Lediglich die Drehbank verfügt über eine Digitalanzeige.
Ich spanne alles ins 3 oder 4 Backenfutter und prüfe mit der Meßuhr den Rundlauf.
Handwerklich habe ich auch bissl Geschick.
Alles ohne Zeitdruck und vorheriges Überlegen hilft auch😉
Andy
@@Praendy Hilfe o.O ich frage weil 1. Die Form der Blätter mikroskopisch exakt sein muss und 2. Bei so hohen Drehzahlen dir bei jeder kleinsten Unebenheit das ganze Ding um die Ohren fliegt
Ja, das ist klar. Deswegen nutze ich industriell gefertigte Räder, die im Turbolader verbaut sind und schon feingewuchtet sind.
Das Turbinenrad ist ebenfalls "lauffertig" und stammt von der Tornado Kampfjet APU.
KHD T 312 heißt das Teil😉
Andy
@@Praendy ooooooh ok
@@Praendy moment moment moment moment das Teil ist von ner APU von nem echten Tornado?!? O.o wie kommst du daran?!?!? Das wären Militärbauteile!! 😂
das nenn ich mal n afterburner
mit dem teil n starfighter bauen :D
Ich mag deine Experimente und den Bau deiner Triebwerke wirklich, aber der Spot war mal nix. Trockenes Gras, n Feld in der Nähe - nee du, das ist nicht gut...
Ear splitten loaden boomer! How much thrust?
Fuel?
He said kerosene in the video.
@@videorowtv5198 ok thanks alone dear👍
Probably Jet A-1 or JP-8
Hi,
I use Kerosene or Diesel.
For the afterburner I use Diesel mix with petrol.
Andy
@@Praendy diesel and petrol mixtures is more carbon deposits 🤔
German engineering is the best in the world! This is really cool m8.
Hey!! Mr. Praendy, I am looking forward to your new engine video.. Come on... Please share it... (10.10.2021)
Накат великолепный, турбина вращается с прекрасным звуком)
Интересно, автор знает про канал Игоря Негоды) ua-cam.com/channels/b9_Bhv37NXN1m8Bmrm9x9w.html
Спасибо да, уже пару лет наблюдаю за Игорем